Czechoslovakian 1963 7.62x54r Steel Core Light Ball
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High quality, accurate ammunition although the lacquer coated cases may cause extraction problems if the chamber is not clean.

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(Reference number 011)

Case Over all Length Powder
Headstamp Material Coating Water Volume Min. Max. Weight
"bxn" (factory) over "63" (year) steel lacquer 61.7 gr. 3.004" 3.017" 46.2 gr.

 

Bullet
Dia. Length Weight Style Core Tip Color Magnetic? Ballistic
Coefficient		 Sectional
Density
.310" 1.264" 148.3 gr. spitzer boat tail steel silver yes 0.401 0.220

 

Package
20 rounds per cardboard box 780 rounds per wooden case
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Measured Muzzle Velocity in Feet per Second (10 shot string)
Rifle M44 M28 M91/30 M91 (Finnish) M91 (Russian)
Low 2668 2808 2834 2849 2784
High 2702 2846 2873 2891 2836
Average 2685 2823 2848 2868 2807
Extreme Spread 34 38 39 42 52
Standard Deviation 16 18 18 17 21
Trajectory and Drop Graph
(click on the thumbnails)		 20041231025.jpg (102253 bytes) 20041231026.jpg (102131 bytes) 20041231027.jpg (101256 bytes) 20041231028.jpg (101818 bytes) 20041231029.jpg (101620 bytes)
Notes on the graphs  The graphs above each represent two sets of data.  The red line is the path of the bullet fired from the rifle with the sights zeroed at 200 yards.   The bullet exits the muzzle at a distance a fraction of an inch below zero inches.   This represents the height of the sight over the centerline of the bore.  The bullet rises above zero in a trajectory that then passes through zero again at 200 yards and continues downward.  The blue line is the the bullet drop in inches for the distance traveled.  This begins at the muzzle at zero inches and decreases with distance not taking sight height or zero distance into account.

 

Trajectory Comparison Graph
This graph combines the trajectories of the 5 graphs above to compare the performance of the test rifles.
Click on the graph for a large, scalable PDF to zoom in for better detail clarity.  Adobe Reader required.

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Bullet Velocity to 500 yards in Feet per Second
Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2685 2574 2465 2359 2255 2155 2056 1960 1867 1777 1691
M28 2823 2708 2596 2487 2380 2276 2175 2076 1980 1885 1795
M91/30 2848 2733 2620 2511 2403 2299 2197 2098 2001 1906 1815
M91 (Finnish) 2868 2752 2639 2529 2421 2316 2214 2114 2017 1922 1830
M91 (Russian) 2807 2693 2581 2472 2366 2263 2162 2063 1967 1873 1784

 

Bullet Energy to 500 yards in Foot Pounds
Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2369 2176 1996 1828 1671 1525 1389 1263 1145 1038 940
M28 2618 2409 2214 2032 1861 1702 1554 1416 1288 1168 1059
M91/30 2666 2454 2256 2071 1898 1736 1586 1446 1315 1194 1082
M91 (Finnish) 2703 2489 2289 2101 1926 1763 1611 1469 1336 1213 1100
M91 (Russian) 2589 2383 2189 2009 1839 1682 1535 1398 1271 1153 1045

 

Recoil
Rifle M44 (Soviet) M28 (Finnish) M91/30 (Soviet) M91 (Finnish) M91 (Russian)
Weight (Pounds) 8.25 lbs 9.75 lbs 8.56 lbs 9.50 lbs 9.38 lbs
Recoil Velocity (Feet per Second) 10.7 fps 9.5 fps 11.0 fps 10.0 fps 9.9 fps
Recoil Energy (Foot-Pound) 14.8 ft-lb 13.9 ft-lb 16.1 ft-lb 14.8 ft-lb 14.3 ft-lb
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